Why this works: The metal provides a nice contrast to the red lips without adding a lot of color—in fact, it almost works as a neutral here. And the eyeliner pencil frames the whole thing beautifully while adding a smoldering element.

Katie, on the other hand, wore a more foil-like gold (with a hint of silver above it) with a black liquid eyeliner and nude lip.

Why this works: The gold perks adds lightness around the black thin line to make her eyes look like they're glowing. And since the contrast is more apparent here, a nude lip provides a great soft, subtle balance.

But what you notice when you look at these ladies? Neither looks like she's on her way to a middle-school dance in the '90s, which is exactly what happens when you go too far with your shimmer. So remember: Less is more. You can always bump up the intensity later if you feel like you can handle it!